Battery And Power - Lenovo ThinkPad Edge E320 User Manual

• Problem: The sound cannot be turned off completely even if you set the Master volume control at
minimum.
Solution: You can still hear some sound even though you have set the Master volume control at
minimum. To turn off the sound completely, go to the Master volume control and select Mute speakers
(Mute in Windows XP ).

Battery and power

This section tells what to do if you have a battery and power problem.
This section includes five topics: Battery, ac power adapter, Power, Power button, Startup and Sleep
(standby) and hibernation. Check these topics to find the related information.
Battery problems
• Problem: The battery pack cannot be fully charged by the power-off method in the standard charge
time for your computer.
Solution: The battery pack might be over-discharged. Do the following:
1. Turn off the computer.
2. Make sure that the over-discharged battery pack is in the computer.
3. Connect the ac power adapter to the computer and let it charge.
If the optional Quick Charger is available, use it to charge the over-discharged battery pack.
If the battery pack cannot be fully charged in 24 hours, use a new battery pack.
• Problem: Your computer shuts down before the battery status indicator shows empty, -or- Your
computer operates after the battery status indicator shows empty.
Solution: Discharge and recharge the battery pack.
• Problem: The operating time for a fully charged battery pack is short.
Solution: Discharge and recharge the battery pack. If your battery's operating time is still short, use a
new battery pack.
• Problem: The computer does not operate with a fully charged battery pack.
Solution: The surge protector in the battery pack might be active. Turn off the computer for one minute to
reset the protector; then turn on the computer again.
• Problem: The battery pack cannot be charged.
Solution: You cannot charge the battery when it is too hot. If the battery feels hot, remove it from the
computer and allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it
still cannot be charged, have it serviced.
ac power adapter problems
• Problem: The ac power adapter is connected to the computer and the working electrical outlet, but the
power adapter (power plug) icon is not displayed in the task bar. Also the ac power indicator does
not light up.
Solution: Do as follows:
1. Make sure that the connection of the ac power adapter is correct. For connecting the ac power
adapter, see the Setup Instructions manual included in the shipping contents of your computer.
2. If the above step is correct, turn off the computer, then disconnect the ac power adapter and uninstall
the main battery.
.
Chapter 10 Troubleshooting computer problems
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